Science & Mathematics - 13 September 2007

Which of these statements is correct?
A The amount of carbon on earth is essentially constant.
B The amount of carbon on earth fluctuates with the seasons.
C. The amount of carbon on earth is increasing due to plant and animal growth.
D. The amount of carbon on earth is decreasing due to consumption of carbon based fuels.
Both B and C are correct

i go with B cuz carbon growth and decay season

2007-09-13 03:32:55 · 5 answers · asked by phong pham 2 in Chemistry

2007-09-13 03:28:22 · 2 answers · asked by Shonen81 1 in Biology

2007-09-13 03:27:31 · 2 answers · asked by PREETHILINGS 1 in Chemistry

2007-09-13 03:26:50 · 9 answers · asked by Anonymous in Botany

2007-09-13 03:11:22 · 3 answers · asked by Giselle 1 in Chemistry

arguement help!!!

2007-09-13 03:00:26 · 5 answers · asked by Baocie 1 in Astronomy & Space

Check whether the given ordered pairs are solutions of the inequality.

y < -9x + 7; (-2,2), (3, -8)

2007-09-13 02:57:51 · 9 answers · asked by nickmydog 1 in Mathematics

is this true ? it retards organogenesis

2007-09-13 02:55:27 · 2 answers · asked by Anonymous in Medicine

1.Which of the following is an example of how the geosphere can affect the atmosphere?
1.rainstorm
2.earthquake
3.volcano eruption
4. tidal wave

I think it is tidal wave or earthquak, but I am stuck on the two so please help.

2.A major concern about increasing global temperatures is that a large portion of polar ice could detach and melt into the ocean. If this happened, which two spheres would interact?
1.cryosphere and hydrosphere
2.geosphere and atmosphere
3.ryosphere and biosphere
4.hydrosphere and atmosphere


3.Which of the following is an important part of scientific methods?
1.making hypotheses
2.traveling to distant places
3.using calculators
4.teaching others
I think this one is 1 or 2, but I am also stuck so please help.

2007-09-13 02:54:18 · 2 answers · asked by MEB 2 in Earth Sciences & Geology

2007-09-13 02:53:24 · 26 answers · asked by Anonymous in Zoology

2007-09-13 02:47:52 · 3 answers · asked by Anonymous in Weather

An arrow is shot at an angle of 45 degrees above the horizontal. The arrow hits a tree a horizontal distance 220m away, at the same height above the ground as it was shot. Use 9.8m/s for the magnitude of the acceleration due to gravity. someone drops an apple from 6m, how long after the arrow is shot should the apple be dropped in order for the arrow to hit the apple?

2007-09-13 02:42:29 · 1 answers · asked by Anonymous in Physics

2007-09-13 02:36:24 · 6 answers · asked by Anonymous in Physics

What is the value of sine pi/2?
What is the value of r on this (sin = y/r)?

Im just confused..tnx..=D

2007-09-13 02:21:42 · 2 answers · asked by bnj 3 in Mathematics

i've read that evacuating people to higher ground instead of the area will cut the casualties from thousands to hundreds. it made me think of an idea for emergency high rise tsunami buildings at populated coastal towns and resorts. they could build a high capacity version of the world's fastest elevator (same one they use at the stratosphere hotel in vegas, which goes up over hundred floors in seconds). what are your opinions on this idea good or not good? =)

2007-09-13 02:15:31 · 3 answers · asked by Ripcity-zen 2 in Earth Sciences & Geology

2007-09-13 02:13:56 · 3 answers · asked by Kenny 1 in Mathematics

If 2 does not divide a, then 4 divides (a^2 - 1).

2007-09-13 02:09:58 · 1 answers · asked by Anonymous in Mathematics

solve the following separable equation

1)dy/dx=2/3y^2x^1/3

2)dy/dx=y/(x(x+1)

3)dy/dx=y^1/2xe^x^2

would appreciate the help ... I have the solutions .. however I think I did them all wrong .... thxs

2007-09-13 02:04:27 · 2 answers · asked by Anonymous in Mathematics

it to make it better like facts etc.
right now this is what ive got:
Out of all eight planets in our solar system Jupiter is the fifth planet in and is also the largest planet apart than the sun. This planet was known since ancient times relating to ancient Greek mythology and religious belief of many cultures of the world. Jupiter was named after the roman god that rules over law and social order also known as Jove. When seen from earth Jupiter is the 3rd largest object in the night sky with the moon and Venus 1st.

Jupiter is made up of about 93% hydrogen and 7% helium

2007-09-13 02:03:38 · 7 answers · asked by Anonymous in Astronomy & Space

a) 0.31311311131111...
b) 0.729999...
c) 0.376237623762...
d) 17 and 4/5

Thanks guys...you're thje best!

2007-09-13 01:58:11 · 2 answers · asked by tom a 1 in Mathematics

Nobody here knows the answers.

2007-09-13 01:57:38 · 2 answers · asked by Anonymous in Physics

pls give me links where i can find some reliable answers.

2007-09-13 01:56:46 · 1 answers · asked by cuteness 1 in Physics

2007-09-13 01:51:20 · 11 answers · asked by kh-snake 3 in Zoology

My favorite(s) are the small, bell-shaped, transparent jelly fish :+)
Real segmented worms are a close second.

2007-09-13 01:49:09 · 8 answers · asked by GardenMoma 3 in Zoology

I know they all die eventually, but is it always by a nova/supernova when they do?

2007-09-13 01:38:34 · 7 answers · asked by polluxgirl14 2 in Astronomy & Space

2007-09-13 01:38:13 · 6 answers · asked by Anonymous in Paranormal Phenomena

planting of seeds , ploughing, winnowing etc.

2007-09-13 01:34:54 · 4 answers · asked by prabha k 1 in Agriculture

2007-09-13 01:09:38 · 10 answers · asked by tallest 1 in Astronomy & Space

2007-09-13 00:55:35 · 5 answers · asked by Anonymous in Weather

I'm sorry to ask such a morbid question - a colleague suggested it had been done by someone he knew of, and I questioned whether this was indeed possible? Any answers much appreciated.

R

2007-09-13 00:51:03 · 25 answers · asked by lateforthesky7 1 in Medicine